The Economic Times

In 2022, Washington DC installed 2 bioretention systems across 2.6 acres to manage runoff. 1 year later, they could retain 2,627 cubic feet of stormwater per storm

Washington DC bioretention systems are quietly changing what happens when heavy rain hits city streets. Two systems on Hamlin Street NE can retain about 2,627 cubic feet of stormwater per storm. That equals nearly 20,000 gallons of water kept from rushing toward local waterways. The project shows how small urban spaces can handle runoff more effectively. It also offers a practical model for greener stormwater management.